View Compilation Error

0_0_32135224_18396.cpp:21:20: error: variable or field 'scanf' declared void
 #define sa(a) scanf("%d", &a)
                    ^
0_0_32135224_18396.cpp:54:6: note: in expansion of macro 'sa'
 void sa() {
      ^
0_0_32135224_18396.cpp:21:29: error: expected primary-expression before ')' token
 #define sa(a) scanf("%d", &a)
                             ^
0_0_32135224_18396.cpp:54:6: note: in expansion of macro 'sa'
 void sa() {
      ^